| 摘要 |
PROBLEM TO BE SOLVED: To acquire data from which steady use can be acquired.SOLUTION: When an access determination unit 120 has determined that access is performed from a user, the access determination unit 120 clears the number of blank days stored in a database 110 in association with user identification information for identifying the user, and a calculation unit 130 updates the number of lapsed days and the number of the blank days stored in the database 110 once a day, calculates a latest parameter on the basis of a parameter, the number of the lapsed days and the number of the blank days stored in the database 110 and a coefficient preset according to service, and updates the parameter stored in the database 110 to the latest parameter. |
